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	Wed, 11 Jun 2008 23:28:59 -0400
Subject: Re: [BUG] iwlwifi 3945 works only with disable_hw_scan=1
From: Zhu Yi <yi.zhu@intel.com>
To: Maxim Levitsky <maximlevitsky@gmail.com>
Cc: linux-wireless@vger.kernel.org, ipw3945-devel@lists.sourceforge.net
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References: <484FEA26.1040305@gmail.com>
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Date: Thu, 12 Jun 2008 11:28:35 +0800
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On Wed, 2008-06-11 at 18:07 +0300, Maxim Levitsky wrote:
> [   87.270433] wlan0: Initial auth_alg=0
> [   87.270433] wlan0: authenticate with AP 00:1b:9e:d8:77:02
> [   87.273477] wlan0: RX authentication from 00:1b:9e:d8:77:02 (alg=0
> transaction=2 status=0)
> [   87.273477] wlan0: authenticated
> [   87.273477] wlan0: associate with AP 00:1b:9e:d8:77:02
> [   87.275823] wlan0: RX AssocResp from 00:1b:9e:d8:77:02 (capab=0x411
> status=0 aid=1)
> [   87.275823] wlan0: associated
> [   87.275823] wlan0: switched to short barker preamble
> (BSSID=00:1b:9e:d8:77:02)
> [   87.276185] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
> [   92.713277] APIC error on CPU0: 40(40)
> [   97.885625] wlan0: no IPv6 routers present
> [  111.766658] wlan0: no IPv6 routers present
> [  112.121332] APIC error on CPU0: 40(40)
> [  144.876825] APIC error on CPU0: 40(40)
> [  158.676958] APIC error on CPU0: 40(40)
> [  212.915533] APIC error on CPU0: 40(40)
> [  290.079923] APIC error on CPU0: 40(40)
> [  290.632507] APIC error on CPU0: 40(40)
> [  296.557068] APIC error on CPU0: 40(40)
> [  303.989147] APIC error on CPU0: 40(40)
> [  305.782793] APIC error on CPU0: 40(40)
> [  307.150566] APIC error on CPU0: 40(40)
> [  310.248346] APIC error on CPU0: 40(40)
> [  310.657006] APIC error on CPU0: 40(40)
> [  311.453595] APIC error on CPU0: 40(40)
> [  317.468024] APIC error on CPU0: 40(40)
> [  321.284080] APIC error on CPU0: 40(40)
> [  328.179853] APIC error on CPU0: 40(40)
> [  330.127038] APIC error on CPU0: 40(40)
> [  332.437435] APIC error on CPU0: 40(40)
> [  335.326931] APIC error on CPU0: 40(40)
> [  335.881538] APIC error on CPU0: 40(40)
> [  337.790227] APIC error on CPU0: 40(40)
> [  368.373446] APIC error on CPU0: 40(40)
> [  369.809138] APIC error on CPU0: 40(40)
> [  374.289855] APIC error on CPU0: 40(40)
> [  375.768238] APIC error on CPU0: 40(40)
> [  382.440748] APIC error on CPU0: 40(40)
> [  383.159443] APIC error on CPU0: 40(40)
> [  383.529522] APIC error on CPU0: 40(40)
> [  383.906913] APIC error on CPU0: 40(40)
> [  384.356990] APIC error on CPU0: 40(40)
> [  384.610941] APIC error on CPU0: 40(40)
> [  386.305185] APIC error on CPU0: 40(40)
> [  386.935949] APIC error on CPU0: 40(40)
> [  390.071741] APIC error on CPU0: 40(40)
> [  390.403979] APIC error on CPU0: 40(40)
> [  391.114519] APIC error on CPU0: 40(40)
> [  391.528138] APIC error on CPU0: 40(40)
> [  403.677688] APIC error on CPU0: 40(40)
> [  404.140181] APIC error on CPU0: 40(40)
> [  406.270920] APIC error on CPU0: 40(40)
> [  406.927867] APIC error on CPU0: 40(40)
> [  418.880757] APIC error on CPU0: 40(40)
> [  419.235211] APIC error on CPU0: 40(40)
> [  437.974455] APIC error on CPU0: 40(40)
> [  438.193878] APIC error on CPU0: 40(40)
> [  443.974790] APIC error on CPU0: 40(40)
> [  444.177027] APIC error on CPU0: 40(40)
> [  479.469645] APIC error on CPU0: 40(40)
> [  479.720979] APIC error on CPU0: 40(40)
> [  497.925734] APIC error on CPU0: 40(40)
> [  498.202985] APIC error on CPU0: 40(40)
> [  526.922424] APIC error on CPU0: 40(40)
> [  527.607409] APIC error on CPU0: 40(40)
> [  715.960235] APIC error on CPU0: 40(40)
> [  716.232556] APIC error on CPU0: 40(40)
> [  753.480442] APIC error on CPU0: 40(40)
> [  753.820830] APIC error on CPU0: 40(40)
> [  774.693756] APIC error on CPU0: 40(40)
> [  774.867494] APIC error on CPU0: 40(40)
> [  815.787137] APIC error on CPU0: 40(40)
> [  816.308363] APIC error on CPU0: 40(40)
> [  841.546917] APIC error on CPU0: 40(40)
> [  842.082173] APIC error on CPU0: 40(40)
> [  847.758887] ACPI: PCI interrupt for device 0000:06:00.0 disabled

It looks the association is succeeded. But 5 minutes later it got an
APIC error. Then I found this error is with lot of devices in your
system. Not sure about what caused this. Can you please try disable MSI
with boot param pci=nomsi?

I don't understand why "disable_hw_scan=1" works for you. Can you also
attach the dmesg for it?

Thanks,
-yi